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GB1062218A - Two axis autocollimator - Google Patents

Two axis autocollimator

Info

Publication number
GB1062218A
GB1062218A GB43636/63A GB4363663A GB1062218A GB 1062218 A GB1062218 A GB 1062218A GB 43636/63 A GB43636/63 A GB 43636/63A GB 4363663 A GB4363663 A GB 4363663A GB 1062218 A GB1062218 A GB 1062218A
Authority
GB
United Kingdom
Prior art keywords
analyser
reflector
rotation
phase
nov
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB43636/63A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Barnes Engineering Co
Original Assignee
Barnes Engineering Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Barnes Engineering Co filed Critical Barnes Engineering Co
Publication of GB1062218A publication Critical patent/GB1062218A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/26—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes
    • G01B11/27—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/26—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes
    • G01B11/27—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes
    • G01B11/272—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes using photoelectric detection means
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/30—Collimators

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

1,062,218. Photo-electric measurement of rotation about two axes. BARNES ENGINEERING CO. Nov. 5, 1963 [Nov. 7, 1962], No. 4363/63. Heading H4D. [Also in Division G2] In a device for measuring the rotation of a distant reflector (30, Fig. 1) about orthogonal axes (31, 32) light from a source (23) is passed via a rotating plane polarizer (26), a slit (25), the reflector and an analyser (3) to a photomultiplier (5), the analyser comprising four quadrants with maximum transmission of light polarized in planes at 45 degrees to each other (Fig. 2). The photo-multiplier output for various positions of the image with respect to the centre of the analyser is discussed (Figs. 3, 5); the A.C. component of such output comprises phase-quadrature components corresponding to the respective rotation of the reflector about the orthogonal axes. The phasequadrature components are resolved by two phase-sensitive detectors fed with respective reference signals in phase quadrature (Fig. 4), the outputs of which may be indicated or may control servo-mechanisms whereby the reflected beam is maintained centrally on the analyser.
GB43636/63A 1962-11-07 1963-11-05 Two axis autocollimator Expired GB1062218A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US236025A US3316799A (en) 1962-11-07 1962-11-07 Two axis autocollimator using polarized light

Publications (1)

Publication Number Publication Date
GB1062218A true GB1062218A (en) 1967-03-15

Family

ID=22887807

Family Applications (1)

Application Number Title Priority Date Filing Date
GB43636/63A Expired GB1062218A (en) 1962-11-07 1963-11-05 Two axis autocollimator

Country Status (2)

Country Link
US (1) US3316799A (en)
GB (1) GB1062218A (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3427108A (en) * 1964-04-24 1969-02-11 Perkin Elmer Corp Electro-optical apparatus for monitoring rotational movement of a body
US3439170A (en) * 1967-03-17 1969-04-15 Us Air Force Inertial platform stabilization employing a laser beam
US3604811A (en) * 1969-07-30 1971-09-14 Teeg Research Inc Shaft position encoders
US3881105A (en) * 1969-12-05 1975-04-29 Philips Corp Apparatus for determining the position of an object in an arbitrary cross-section of a beam of radiation
US3932039A (en) * 1974-08-08 1976-01-13 Westinghouse Electric Corporation Pulsed polarization device for measuring angle of rotation
US5600123A (en) * 1993-02-17 1997-02-04 Litton Systems, Inc. High-resolution extended field-of-view tracking apparatus and method
JPH10507833A (en) * 1994-10-21 1998-07-28 サーマ−ウェイブ・インク Spectroscopic ellipsometer
JP4365927B2 (en) 1999-03-12 2009-11-18 キヤノン株式会社 Interference measuring device and grating interference encoder
WO2010085632A2 (en) * 2009-01-23 2010-07-29 University Of Washington Virtual core flow cytometry
US20240426657A1 (en) * 2023-06-23 2024-12-26 Oren Aharon Multi Spectral Digital Autocollimator

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2703505A (en) * 1948-07-03 1955-03-08 Kearney & Trecker Corp Apparatus for aligning machine elements
US2651771A (en) * 1949-10-14 1953-09-08 Sperry Corp Angular motion detector and position indicator
US2952779A (en) * 1958-10-29 1960-09-13 Robert M Talley Missile gyro alignment system
US3031919A (en) * 1959-12-09 1962-05-01 Barnes Eng Co Visual monitoring device
US3087377A (en) * 1960-07-07 1963-04-30 Barnes Eng Co Polarized light autocollimator

Also Published As

Publication number Publication date
US3316799A (en) 1967-05-02

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